3.1 Function and Performances ···················································································· 3 3.1.1 Concept/Feature ··························································································· 3 3.1.2 Functional Composition ·················································································· 3 3.1.3 Major Functions ··························································································· 4 3.1.4 R/D Conversion Capability ·············································································13 3.1.5 Input/Output Signal ······················································································15 3.1.6 Input/Output Circuit(Exclude Protection Circuit) ···················································17 3.1.7 Electrical Properties······················································································21 3.1.8 Required Electric Power Supply ·······································································30
This specification document applies to R/D(Resolver/Digital) Conversion IC which is mountable on vehicles(automobiles, trains and so on), uses the time-proven R/D Conversion method “Digital Tracking Method” and provides a low-cost and reliable angle(absolute value) detection system designed to accompany with amplitude modulation method brushless resolver(BRX).
Figure 1 Function Configuration Diagram
参考図
ED’N No.
DWG NO.
3
4
5
6
78
9
10
11 12 SHEET
SPC 0 0 9 5 7 4W00 3
T A M A G A W A S E IK I C O . , L T D . J A P参A考N図
参考図 村松 重利 2015/04/13 23:30:38 JST
MODEL No. AU6805
ED’N No. . .
TITLE Smartcoder（AU6805）
Specifications
DWG NO.
34
5
67
8
9 10 11 12 SHEET
SPC009574W00 1 39
T A M A G A W A S E IK I C O . , L T D . J A P参A考N 図
3.2 Physical Feature ································································································31 3.3 Environment Resistance ·······················································································31 4 Quality Assurance ····································································································31 4.1 Warranty of Products···························································································31 4.2 Reliability Test··································································································32 5 Application Note······································································································33 5.1 Input/Output Interface Circuit ················································································33 5.2 System Setting(IC Operating Environment Equipment) ··················································33 5.3 Measure against Noise ·························································································34 5.4 Fail-safe System Architecture ················································································35 5.5 Encoder Application ···························································································36
3.1.2 Functional Composition
R/D conversion functional composition of Digital Tracking Method refers to Figure 1 Function Configuration Diagram.
Sinθ/F(t) BRX
2 Related Document (Referential Drawing)
Attended Figure.3 AU6805 Package Outline Figure
3 Requirements
3.1 Function and Performances
3.1.1 Concept/Feature
θ
R/D Conversion Core
φ
(Digital Tracking Method）
Cosθ/F(ｔ)
F(ｔ)
Excitation Signal
System Control / Input Output Control
Generation
Failure Detection / Built In Self Test（BIST）
The internal constitution of Digital Tracking R/D conversion IC is shown in Figure 2.
VCC
参考図
ED’N No.
DWG NO.
3
4
5
6
78
9
10
11 12 SHEET
SPC 0 0 9 5 7 4W00 2
T A M A G A W A S E IK I C O . , L T D . J A P参A考N図
参考図 村松 重利 2015/04/13 23:30:38 JST
参考図
1 Scope
Digital Tracking Method consists of Digital Signal Processing hardware, sustains and improves the conversion performance (resolution, accuracy, tracking speed, noise immunity, etc.) which is equivalent of AU6803 Twin-PLL method, and achieve a low price. Capable of building an absolute angle detection system with safety and high reliability by enhancing the failure detection function and incorporating a built-in self-test (BIST) function for the R/D conversion and a failure detection function. Simple to use. (All-in-one design; eliminates phase adjustment of exciting signal (i.e. allowable phase angle: ±45 degrees), and others). Quality capable of enduring vehicle-mount applications.